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Universal heat conduction in Ce1-xYbxCoIn5 [electronic resource] : Evidence for robust nodal d-wave superconducting gap

Published:
Washington, D.C. : United States. Dept. of Energy. Office of Basic Energy Sciences, 2016.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
Physical Description:
Article numbers 64,502 : digital, PDF file
Additional Creators:
Brookhaven National Laboratory, United States. Department of Energy. Office of Basic Energy Sciences, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary:
In the heavy-fermion superconductor Ce1-xYbxCoIn5, Yb doping was reported to cause a possible change from nodal d-wave superconductivity to a fully gapped d-wave molecular superfluid of composite pairs near x ≈ 0.07 (nominal value xnom = 0.2). Here we present systematic thermal conductivity measurements on Ce1-xYbxCoIn5 (x = 0.013, 0.084, and 0.163) single crystals. The observed finite residual linear term κ0/T is insensitive to Yb doping, verifying the universal heat conduction of the nodal d-wave superconducting gap in Ce1-xYbxCoIn5. Similar universal heat conduction is also observed in the CeCo(In1–yCdy)5 system. Furthermore, these results reveal a robust nodal d-wave gap in CeCoIn5 upon Yb or Cd doping.
Report Numbers:
E 1.99:bnl--111990-2016-ja
bnl--111990-2016-ja
Subject(s):
Note:
Published through SciTech Connect.
02/01/2016.
"bnl--111990-2016-ja"
"KC0201050"
Physical Review B 93 6 ISSN 2469-9950; PRBMDO AM
Y. Xu; C. Petrovic; J. K. Dong; I. K. Lum; J. Zhang; X. C. Hong; L. P. He; K. F. Wang; Y. C. Ma; M. B. Maple; L. Shu; S. Y. Li.
Funding Information:
SC00112704
PM016
View MARC record | catkey: 23758092